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How to implement navigation activity and Recyclerview in MainActivity

I started off with a Navigation drawer activity and I added a recyclerView into the content_main.xml but I have been unable to implement the RecyclerView into the ManiActivity.java file.
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
That is what my MainAcitity.java looks like when I haven't only implemented the NavigationView Activity.
public class MainActivity extends AppCompatActivity implements MyRecyclerViewAdapter.ItemClickListener {
MyRecyclerViewAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// data to populate the RecyclerView with
ArrayList<String> animalNames = new ArrayList<>();
animalNames.add("Horse");
animalNames.add("Cow");
animalNames.add("Camel");
animalNames.add("Sheep");
animalNames.add("Goat");
// set up the RecyclerView
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(this, animalNames);
adapter.setClickListener(this);
recyclerView.setAdapter(adapter);
}
#Override
public void onItemClick(View view, int position) {
Toast.makeText(this, "You clicked " + adapter.getItem(position) + " on row number " + position, Toast.LENGTH_SHORT).show();
}
}
And I also need this(the recyclerview) into my MainActivity.java There isn't room for both
This code below is my adapter class and the whole struggle is to add this to the MainActivity.java
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {
private List<String> mData = Collections.emptyList();
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
// data is passed into the constructor
public MyRecyclerViewAdapter(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
// inflates the row layout from xml when needed
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_row, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
// binds the data to the textview in each row
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
String animal = mData.get(position);
holder.myTextView.setText(animal);
}
// total number of rows
#Override
public int getItemCount() {
return mData.size();
}
// stores and recycles views as they are scrolled off screen
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView myTextView;
public ViewHolder(View itemView) {
super(itemView);
myTextView = (TextView) itemView.findViewById(R.id.tvAnimalName);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
// convenience method for getting data at click position
public String getItem(int id) {
return mData.get(id);
}
// allows clicks events to be caught
public void setClickListener(ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
// parent activity will implement this method to respond to click events
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}

You need to implement both NavigationView.OnNavigationItemSelectedListener and MyRecyclerViewAdapter.ItemClickListener interfaces on the MainActivity class. This way you would be able to call the adapter class for the Recycler view.Your code should look like this:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, MyRecyclerViewAdapter.ItemClickListener {
MyRecyclerViewAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// data to populate the RecyclerView with
ArrayList<String> animalNames = new ArrayList<>();
animalNames.add("Horse");
animalNames.add("Cow");
animalNames.add("Camel");
animalNames.add("Sheep");
animalNames.add("Goat");
// set up the RecyclerView
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(this, animalNames);
adapter.setClickListener(this);
recyclerView.setAdapter(adapter);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
#Override
public void onItemClick(View view, int position) {
Toast.makeText(this, "You clicked " + adapter.getItem(position) + " on row number " + position, Toast.LENGTH_SHORT).show();
}
}
In Java, a class can implement more than one interfaces and a class can only extend from one parent. Implementation of more than one interfaces eliminates multiple inheritance which is not allowed in Java.
For example:
ClassA implements ClassB, ClassC
Your edited code can be found here

Problem seems to be associated with Adapter class. I would like to see your code for adapter.
1. Make sure if count is not equal to zero.
2. Make sure you are inflating a proper view in adapter class.
3. The view you are inflating must have external layout Relative or Linear or Constraint.

public class HomeActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener{
TabLayout tabLayout;
ViewPager viewPager;
NavigationView navigationView;
View navHeaderView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
navHeaderView = navigationView.getHeaderView(0);
viewPager = (ViewPager) findViewById(R.id.viewPagerContainer);
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
textViewNavigationName = (TextView)
navHeaderView.findViewById(R.id.textViewNavigationName);
textViewNavigationEmail = (TextView)
navHeaderView.findViewById(R.id.textViewNavigationEmail);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction =
fragmentManager.beginTransaction();
Fragment_Home objFragment1 = new Fragment_Home();
fragmentTransaction.add(R.id.viewPagerContainer, objFragment1).addToBackStack("backkkkkkkkkkkkk");
fragmentTransaction.commit();
}
}
public class Fragment_Home extends Fragment
{
private static final String ARG_PAGE_KEY = "arg_page";
String nextPageToken;
String prevPageToken;
String pageToken;
int sizeOfPlaylist;
int sizeOfCurrentList;
int firstItemPosition;
MenuItem nextItem;
MenuItem lastItem;
LinearLayout linearLayoutProgress, linearLayoutNoConnection;
Button buttonReload;
RecyclerView recyclerViewVideos;
AllVideosAdapterR adapter;
TextView textViewProgress;
public static Fragment_Home newInstance(int pageNumber) {
Fragment_Home myFragment = new Fragment_Home();
Bundle arguments = new Bundle();
arguments.putInt(ARG_PAGE_KEY, pageNumber);
myFragment.setArguments(arguments);
return myFragment;
}
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
setHasOptionsMenu(true);
LayoutInflater inflater1 = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater1.inflate(R.layout.fragment_home, container, false);
getActivity().invalidateOptionsMenu();
findControls(view);
gettingList();
buttonReload.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
gettingList();
}
});
return view;
}
public void findControls(View view)
{
recyclerViewVideos = (RecyclerView)view.findViewById(R.id.recyclerViewVideos);
linearLayoutProgress = (LinearLayout)view. findViewById(R.id.linearLayoutProgress);
textViewProgress = (TextView) view.findViewById(R.id.textViewProgress);
linearLayoutProgress.setVisibility(View.INVISIBLE);
linearLayoutNoConnection = (LinearLayout)view.findViewById(R.id.linearLayoutNoConnection);
linearLayoutNoConnection.setVisibility(View.INVISIBLE);
buttonReload = (Button)view.findViewById(R.id.buttonReload);
}
private boolean isDeviceOnline() {
ConnectivityManager connMgr =
(ConnectivityManager)getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
return (networkInfo != null && networkInfo.isConnected());
}
public void setAdapter(List<Item> listItems) {
recyclerViewVideos.setLayoutManager(new
LinearLayoutManager(getActivity()));
adapter = new AllVideosAdapterR(getActivity(), listItems);
recyclerViewVideos.setAdapter(adapter);
}
public void showProgress(String message) {
textViewProgress.setText(message);
linearLayoutProgress.setVisibility(View.VISIBLE);
}
public void stopProgress() {
linearLayoutProgress.setVisibility(View.INVISIBLE);
}
public void gettingList() {
if (!isDeviceOnline()) {
linearLayoutNoConnection.setVisibility(View.VISIBLE);
} else {
linearLayoutNoConnection.setVisibility(View.INVISIBLE);
}
showProgress("Loading videos..");
Retrofit retrofit = newRetrofit.Builder().baseUrl(BaseUrls.BASE_URL).addConverterFactory(GsonConverterFactory.create()).build();
WebApis call1 = retrofit.create(WebApis.class);
Call<ListResponse> call = call1.requestList();
call.enqueue(new Callback<ListResponse>() {
#Override
public void onResponse(Call<ListResponse> call, Response<ListResponse> response) {
System.out.println("size....................." + response.body().getItems().size());
setAdapter(response.body().getItems());
sizeOfPlaylist = response.body().getPageInfo().getTotalResults();
try {
nextPageToken = response.body().getNextPageToken();
prevPageToken = response.body().getPrevPageToken();
firstItemPosition = response.body().getItems().get(0).getSnippet().getPosition();
sizeOfCurrentList = response.body().getItems().size();
} catch (Exception e) {
Toast.makeText(getActivity(), "More pages not available", Toast.LENGTH_SHORT).show();
}
stopProgress();
}
#Override
public void onFailure(Call<ListResponse> call, Throwable t) {
stopProgress();
Toast.makeText(getActivity(), "Check your Network connection", Toast.LENGTH_LONG).show();
linearLayoutNoConnection.setVisibility(View.VISIBLE);
}
});
}
public void gettingNextList(String token) {
showProgress("Loading videos..");
Retrofit retrofit = new Retrofit.Builder().baseUrl(BaseUrls.BASE_URL).addConverterFactory(GsonConverterFactory.create()).build();
WebApis call1 = retrofit.create(WebApis.class);
Call<ListResponse> call = call1.requestNextList(token);
call.enqueue(new Callback<ListResponse>() {
#Override
public void onResponse(Call<ListResponse> call, Response<ListResponse> response) {
System.out.println("size....................." + response.body().getItems().size());
setAdapter(response.body().getItems());
try {
nextPageToken = response.body().getNextPageToken();
prevPageToken = response.body().getPrevPageToken();
firstItemPosition = response.body().getItems().get(0).getSnippet().getPosition();
sizeOfCurrentList = response.body().getItems().size();
} catch (Exception e) {
Toast.makeText(getActivity(), "More pages not available", Toast.LENGTH_SHORT).show();
}
stopProgress();
}
#Override
public void onFailure(Call<ListResponse> call, Throwable t) {
stopProgress();
Toast.makeText(getActivity(), "Network Problem", Toast.LENGTH_LONG).show();
}
});
}
public interface WebApis {
#GET(BaseUrls.GETTING_LIST)
Call<ListResponse> requestList();
#GET(BaseUrls.GETTING_LIST)
Call<ListResponse> requestNextList(#Query("pageToken") String pageToken);
}
}

How to know when an activity has finish loaded

I have an activity who load a list of data, this activity its a TabActivity with 3 Tabs, all tabs load a diferent data type.
But the data may be really a bunch of data, for that reason my activity may take a lot of time to show itself.
I start teh activity using
Intent intent = new Intent(MainActivity.this, PcapAnalisys.class);
startActivity(intent);
Then, when the activity is loading shows a black screen, and after a few seconds show the content properly.
There is a way on how to show a message like: "Loading activity... please wait" or something?
This is my code for a my TabActivity:
public class PcapAnalysis extends AppCompatActivity {
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
private TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pcap_analysis);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mViewPager = (ViewPager) findViewById(R.id.container);
tabLayout = (TabLayout) findViewById(R.id.tabs);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
//fab.setImageResource(R.drawable.ic_attach_file_white_24dp);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
FileChooserDialog dialog = new FileChooserDialog(PcapAnalysis.this);
dialog.show();
dialog.addListener(new FileChooserDialog.OnFileSelectedListener() {
#Override
public void onFileSelected(Dialog source, File file) {
source.hide();
Toast.makeText(source.getContext(),
"File selected: " + file.getAbsolutePath(),
Toast.LENGTH_LONG).show();
Log.i("Archivo seleccionado", file.getAbsolutePath());
new AsyncTask_load(PcapAnalysis.this, file.getAbsolutePath()).execute();
}
public void onFileSelected(Dialog source, File folder, String name) {
source.hide();
Toast.makeText(source.getContext(),
"File created: " + folder.getName() + "/" + name,
Toast.LENGTH_LONG).show();
}
});
}
});
new Task().execute();
}
#Override
public void recreate()
{
super.recreate();
}
#Override
public boolean onSupportNavigateUp() {
onBackPressed();
return false;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_pcap_analysis, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/*public static class PlaceholderFragment extends Fragment {
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_pcap_analysis, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}*/
private class Task extends AsyncTask<Void, Integer, Void> {
private ProgressDialog pDialog;
#Override
protected void onPreExecute() {
pDialog = new ProgressDialog(PcapAnalysis.this);
pDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pDialog.setMessage("Procesando...");
pDialog.setCancelable(true);
pDialog.setMax(100);
pDialog.setCanceledOnTouchOutside(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... voids) {
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager.setOffscreenPageLimit(3); //cuantas paginas se precargan
mViewPager.setAdapter(mSectionsPagerAdapter);
tabLayout.setupWithViewPager(mViewPager);
//publishProgress(progress);
return null;
}
#Override
protected void onProgressUpdate(Integer... values) {
}
#Override
protected void onPostExecute(Void result) {
pDialog.dismiss();
}
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
private Fragment http = new HttpList();
private Fragment dns = new DnsList();
private Fragment ip = new IpList();
private Fragment resume = new ResumeList();
SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
//return PlaceholderFragment.newInstance(position + 1);
switch (position) {
case 0:
return http;
case 1:
return dns;
case 2:
return ip;
case 3:
return resume;
}
return null;
}
#Override
public int getCount() {
return 4;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "HTTP";
case 1:
return "DNS";
case 2:
return "RESOURCE IP";
case 3:
return "RESUME";
}
return null;
}
}
}
As you can see this activity use fragments to show the data, and each fragment has a for cicle to load the data (that is in a String array).
Also I use a AsyncTask trying to solve this problem, but is not working. Please help!

Switch tabs inside a Fragment from Drawer Menu

I have a TabLayout in a Fragment. I’m trying to switch tabs using DrawerLayout item. Not sure how to access the TabLayout from the parent Activity. Checked everywhere, to no avail.
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initialize Toolbar and set it as the Action Bar
mToolbar = (Toolbar) findViewById(R.id.mToolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
// Inflate the TabFragment as the first one
mFragmentManager = getSupportFragmentManager();
mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.containerView, new TabFragment()).commit();
// Initialize Drawer Menu
mDrawerLayout = (DrawerLayout) findViewById(R.id.mDrawerLayout);
mNavigationView = (NavigationView) findViewById(R.id.mNavigationView);
headerLayout = mNavigationView.getHeaderView(0);
// Set click events for the Drawer Menu items
mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Close the Drawer Menu when an item is clicked
mDrawerLayout.closeDrawers();
switch (menuItem.getItemId()) {
case R.id.menuLessons:
return true;
case R.id.menuCheatSheet:
return true;
case R.id.menuMyProfile:
startActivity(new Intent(MainActivity.this, MyProfileActivity.class));
overridePendingTransition(R.anim.zoom_in, R.anim.fade_out);
return true;
default:
return true;
}
}
});
}
}
TabFragment.java
public class TabFragment extends Fragment {
public TabLayout mTabLayout;
public ViewPager mViewPager;
public static int int_items = 2;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the Tab Layout and setup View Pager
View x = inflater.inflate(R.layout.layout_tabs, null);
mTabLayout = (TabLayout) x.findViewById(R.id.mTabLayout);
mViewPager = (ViewPager) x.findViewById(R.id.mViewPager);
// Setup Adapter for the View Pager
mViewPager.setAdapter(new MyAdapter(getChildFragmentManager()));
return x;
}
private class MyAdapter extends FragmentPagerAdapter {
MyAdapter(FragmentManager fm) {
super(fm);
}
// Return Fragment with respect to position
#Override
public Fragment getItem(int position) {
switch(position) {
case 0 : return new LessonsFragment();
case 1 : return new CheatSheetFragment();
}
return null;
}
#Override
public int getCount() {
return int_items;
}
// Return title of the tab according to the position
#Override
public CharSequence getPageTitle(int position) {
switch(position) {
case 0 :
return "Lessons";
case 1 :
return "Cheat Sheet";
}
return null;
}
}
public void setCurrentTab(int tab_index) {
FragmentTabHost mTabHost = (FragmentTabHost)getActivity().findViewById(android.R.id.tabhost);
mTabHost.setCurrentTab(tab_index);
}
}

To get an instance to a Fragment in an activity, use:
Fragment tabFragment = (TabFragment) getSupportFragmentManager().findFragmentById(R.id.containerView);
Once you have this, you can then call your method:
tabFragment.setCurrentTab(/*tab index*/);
That answers the question, however I would consider using a ViewPager or simply sticking with tapping tabs to move to them instead of doing it view the nav drawer.

how to perform an action by selecting an item from the recyclerView on the fragment

I am using the navigation drawer template in the Android Studio
I use one activity only ... fragments are replaced over that one activity
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// here I call the fragment
FragmentManager fm=getFragmentManager();
fm.beginTransaction().replace(R.id.content_main_frame, new homeFragment()).commit();
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
public class homeFragment extends Fragment{
RecyclerView recyclerView;
String[] fields={"ALV","NIJU","AJITH","ASWIN"};
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
//for getting recyclerview id
recyclerView= (RecyclerView) rootView.findViewById(R.id.recyclerView_home);
// for specifying layout manager
LinearLayoutManager manager=new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(manager);
homeListAdapter adapter = new homeListAdapter(this.getActivity(), fields);
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
return rootView;
}
}
public class homeListAdapter extends RecyclerView.Adapter<homeListAdapter.homeViewHolder> {
private Context context;
private String[] field;
public homeListAdapter(Context context, String[] field){
this.context=context;
this.field=field;
}
#Override
public homeViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater=LayoutInflater.from(parent.getContext());
View view = inflater.from(parent.getContext()).inflate(R.layout.item_home,parent,false);
homeViewHolder viewHolder= new homeViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(homeViewHolder holder, int position) {
holder.card_home_title.setText(field[position]);
}
#Override
public int getItemCount() {
return field.length;
}
// View holder
public static class homeViewHolder extends RecyclerView.ViewHolder{
public CardView card_view;
public TextView card_home_title;
public homeViewHolder(View itemView) {
super(itemView);
card_view = (CardView) itemView.findViewById(R.id.card_view);
card_home_title = (TextView) itemView.findViewById(R.id.card_text);
}
}
}
public class ItemHome implements Serializable {
public int id;
public String title;
}
When I press ALV I want to replace by this alvfragment, and when I press the Niju I want to display this Nijufragment.
Screenshot:

If i understand you correctly you want to replace fragments from the navigation drawer, For that you need to go to MainActivty and this is an example for how to do that:
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
//use here the desired nav
} else if (id == R.id.nav_ALV) {
FragmentManager fm=getFragmentManager();
fm.beginTransaction().replace(R.id.content_main_frame, new ALVFragment).commit();

Android - How to change fragments in the Navigation Drawer

I'm fairly new to Android programming, but have been doing pretty well until now. I've read a lot of answers to this question but can't seem to make mine work. Basically what I have is a MainActivity with a Navigation Drawer. I have two fragments correctly initialized with corresponding fragment layout xmls. Currently I can get my first fragment to show up when the app starts and when I click on each item in the drawer, the titles change; however, the fragment stays the same. Any suggestions? What I believe to be relevant code is below (not shown is the code for the NavigationDrawerFragment.java with the necessary code automatically built by Eclipse). Thanks in advance!
public class MainActivity extends Activity
implements NavigationDrawerFragment.NavigationDrawerCallbacks {
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {#link #restoreActionBar()}.
*/
private CharSequence mTitle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mNavigationDrawerFragment = (NavigationDrawerFragment)
getFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(
R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
}
#Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.content_frame, PlaceholderFragment.newInstance(position + 1))
.commit();
}
public void onSectionAttached(int number) {
switch (number) {
case 1:
mTitle = getString(R.string.title_home);
break;
case 2:
mTitle = getString(R.string.title_infodirect);
break;
case 3:
mTitle = getString(R.string.title_trailmap);
break;
case 4:
mTitle = getString(R.string.title_poi);
break;
case 5:
mTitle = getString(R.string.title_photomap);
break;
case 6:
mTitle = getString(R.string.title_report);
break;
case 7:
mTitle = getString(R.string.title_rulesreg);
}
}
public void restoreActionBar() {
ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.overview, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
return rootView;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MainActivity) activity).onSectionAttached(
getArguments().getInt(ARG_SECTION_NUMBER));
}
}
public static class InfoDirectFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static InfoDirectFragment newInstance(int sectionNumber) {
InfoDirectFragment fragment = new InfoDirectFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public InfoDirectFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_infodirect, container, false);
return rootView;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MainActivity) activity).onSectionAttached(
getArguments().getInt(ARG_SECTION_NUMBER));
}
}
}

Follow This link!! for more details and use
private class DrawerItemClickListener implements
ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
selectItem(position);
}
}
and
private void selectItem(int position) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
switch (position) {
case 0:
ft.replace(R.id.content_frame, new Fragment1, Constants.TAG_FRAGMENT).commit();
break;
case 1:
ft.replace(R.id.content_frame, new Fragment2, Constants.TAG_FRAGMENT);
ft.commit();
break;
}
mDrawerList.setItemChecked(position, true);
setTitle(title[position]);
// Close drawer
mDrawerLayout.closeDrawer(mDrawerList);
}

#Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
if (position == 0) {
fragmentManager.beginTransaction()
.replace(R.id.container, FirstFragment.newInstance())
.commit();
} else if (position == 1) {
fragmentManager.beginTransaction()
.replace(R.id.container, SecondFragment.newInstance())
.commit();
} else if (position == 2) {
fragmentManager.beginTransaction()
.replace(R.id.container, ThridFragment.newInstance())
.commit();
}
}
and create fragment
public class FirstFragment extends Fragment {
public static FirstFragment newInstance() {
FirstFragment fragment = new FirstFragment();
return fragment;
}
public FirstFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_first, container, false);
return rootView;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((MainActivity) activity).onSectionAttached(1);
}
}

I was working with the Navigation Drawer based on what Eclipse generated as well (yours looks like it was made with it as well), and I've pruned it a bit so that it's not perfectly silly. I also did some black magic at some points, because I was getting silly errors that I've fixed over times (such as being unable to update the action bar title on Back press, or that if you rotate the screen then the element at index 0 is recreated by the activity):
NavigationDrawerActivity:
public class NavigationDrawerActivity extends ActionBarActivity implements
NavigationDrawerFragment.NavigationDrawerCallbacks
{
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {#link #restoreActionBar()}.
*/
private CharSequence mTitle;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager()
.findFragmentById(R.id.navigation_drawer);
mTitle = getString(R.string.drawer_0);
// Set up the drawer.
mNavigationDrawerFragment.setUp(R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
getSupportFragmentManager().addOnBackStackChangedListener(new OnBackStackChangedListener()
{
public void onBackStackChanged()
{
int backCount = getSupportFragmentManager().getBackStackEntryCount();
if (backCount == 0)
{
finish();
}
else
{
Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.container);
mTitle = getString(((GetActionBarTitle) fragment).getActionBarTitleId());
restoreActionBar();
}
}
});
if (savedInstanceState != null)
{
this.onBackPressed();
}
}
public void restoreActionBar()
{
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
if (!mNavigationDrawerFragment.isDrawerOpen())
{
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.main, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
#Override
public void onNavigationDrawerItemSelected(int position)
{
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
boolean addToBackStack = true;
Fragment fragment = null;
switch (position)
{
case 0:
fragment = new Fragment0();
break;
case 1:
fragment = new Fragment1();
break;
case 2:
fragment = new Fragment2();
break;
case 3:
fragment = new Fragment3();
break;
case 4:
fragment = new Fragment4();
break;
case 5:
logout();
default:
Log.w(this.getClass().getSimpleName(),
"Reached Default in onNavigationDrawerItemSelected!");
break;
}
if (fragment != null)
{
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.replace(R.id.container, fragment);
if (addToBackStack == true)
{
ft.addToBackStack(null);
}
ft.commit();
mTitle = getString(((GetActionBarTitle) fragment).getActionBarTitleId());
restoreActionBar();
}
}
public void logout()
{
this.finish();
}
}
The insidious "GetActionBarTitle":
public interface GetActionBarTitle
{
public int getActionBarTitleId();
}
The generated NavigationDrawerFragment (I don't think I've changed this at all):
public class NavigationDrawerFragment extends Fragment
{
/**
* Remember the position of the selected item.
*/
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
/**
* Per the design guidelines, you should show the drawer on launch until the user manually expands
* it. This shared
* preference tracks this.
*/
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
/**
* A pointer to the current callbacks instance (the Activity).
*/
private NavigationDrawerCallbacks mCallbacks;
/**
* Helper component that ties the action bar to the navigation drawer.
*/
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private ListView mDrawerListView;
private View mFragmentContainerView;
private int mCurrentSelectedPosition = 0;
private boolean mFromSavedInstanceState;
private boolean mUserLearnedDrawer;
public NavigationDrawerFragment()
{
}
/**
* Callbacks interface that all activities using this fragment must implement.
*/
public static interface NavigationDrawerCallbacks
{
/**
* Called when an item in the navigation drawer is selected.
*/
void onNavigationDrawerItemSelected(int position);
}
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Read in the flag indicating whether or not the user has demonstrated awareness of the
// drawer. See PREF_USER_LEARNED_DRAWER for details.
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
if (savedInstanceState != null)
{
mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
mFromSavedInstanceState = true;
}
// Select either the default item (0) or the last selected item.
selectItem(mCurrentSelectedPosition);
}
#Override
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
// Indicate that this fragment would like to influence the set of actions in the action bar.
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
mDrawerListView = (ListView) inflater.inflate(R.layout.fragment_navigation_drawer, container,
false);
mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
selectItem(position);
}
});
String[] drawerTitles = new String[] { getString(R.string.drawer_0),
getString(R.string.drawer_1),
getString(R.string.drawer_2), getString(R.string.drawer_3),
getString(R.string.drawer_4), getString(R.string.drawer_5) };
mDrawerListView.setAdapter(new ArrayAdapter<String>(getActionBar().getThemedContext(),
android.R.layout.simple_list_item_1, android.R.id.text1, drawerTitles));
mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
return mDrawerListView;
}
public boolean isDrawerOpen()
{
return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
}
/**
* Users of this fragment must call this method to set up the navigation drawer interactions.
*
* #param fragmentId
* The android:id of this fragment in its activity's layout.
* #param drawerLayout
* The DrawerLayout containing this fragment's UI.
*/
public void setUp(int fragmentId, DrawerLayout drawerLayout)
{
mFragmentContainerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
)
{
#Override
public void onDrawerClosed(View drawerView)
{
super.onDrawerClosed(drawerView);
if (!isAdded())
{
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
#Override
public void onDrawerOpened(View drawerView)
{
super.onDrawerOpened(drawerView);
if (!isAdded())
{
return;
}
if (!mUserLearnedDrawer)
{
// The user manually opened the drawer; store this flag to prevent auto-showing
// the navigation drawer automatically in the future.
mUserLearnedDrawer = true;
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
// per the navigation drawer design guidelines.
if (!mUserLearnedDrawer && !mFromSavedInstanceState)
{
mDrawerLayout.openDrawer(mFragmentContainerView);
}
// Defer code dependent on restoration of previous instance state.
mDrawerLayout.post(new Runnable()
{
#Override
public void run()
{
mDrawerToggle.syncState();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private void selectItem(int position)
{
mCurrentSelectedPosition = position;
if (mDrawerListView != null)
{
mDrawerListView.setItemChecked(position, true);
}
if (mDrawerLayout != null)
{
mDrawerLayout.closeDrawer(mFragmentContainerView);
}
if (mCallbacks != null)
{
mCallbacks.onNavigationDrawerItemSelected(position);
}
}
#Override
public void onAttach(Activity activity)
{
super.onAttach(activity);
try
{
mCallbacks = (NavigationDrawerCallbacks) activity;
}
catch (ClassCastException e)
{
throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
}
}
#Override
public void onDetach()
{
super.onDetach();
mCallbacks = null;
}
#Override
public void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
}
#Override
public void onConfigurationChanged(Configuration newConfig)
{
super.onConfigurationChanged(newConfig);
// Forward the new configuration the drawer toggle component.
mDrawerToggle.onConfigurationChanged(newConfig);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
{
// If the drawer is open, show the global app actions in the action bar. See also
// showGlobalContextActionBar, which controls the top-left area of the action bar.
if (mDrawerLayout != null && isDrawerOpen())
{
inflater.inflate(R.menu.global, menu);
showGlobalContextActionBar();
}
super.onCreateOptionsMenu(menu, inflater);
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
if (mDrawerToggle.onOptionsItemSelected(item))
{
return true;
}
/*
* if (item.getItemId() == R.id.action_example)
* {
* Toast.makeText(getActivity(), "Example action.", Toast.LENGTH_SHORT).show();
* return true;
* }
*/
return super.onOptionsItemSelected(item);
}
/**
* Per the navigation drawer design guidelines, updates the action bar to show the global app
* 'context', rather than
* just what's in the current screen.
*/
private void showGlobalContextActionBar()
{
ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setTitle(R.string.app_name);
}
private ActionBar getActionBar()
{
return ((ActionBarActivity) getActivity()).getSupportActionBar();
}
}
An example fragment that is created by this navigation drawer:
public class MyFragment extends Fragment implements GetActionBarTitle, OnClickListener
{
private int titleId;
private Button btn0;
private Button btn1;
private Button btn2;
public MyFragment()
{
super();
titleId = R.string.drawer_myfragment_title;
}
#Override
public int getActionBarTitleId()
{
return titleId;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.fragment_myfragment, container, false);
return rootView;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState)
{
super.onViewCreated(view, savedInstanceState);
btn0 = (Button) view.findViewById(R.id.btn0);
btn1 = (Button) view.findViewById(R.id.btn1);
btn2 = (Button) view.findViewById(R.id.btn2);
btn0.setOnClickListener(this);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
}
#Override
public void onClick(View v)
{
if (btn0 == v)
{
}
else if (btn1 == v)
{
}
else if (btn2 == v)
{
}
}
}
I hope that works as you intended. I had to do magic with the BackStackListener and stuff to work properly.

I know this is quite old, but I would like to share some articles Ive written about the Application Drawer and Fragment navigation. They are up to date with the latest samples (as for 2017 at least). Feel free to take a look at:
https://aarcoraci.wordpress.com/2017/02/13/android-tutorial-drawer-and-fragment-navigation-made-easyier/
https://aarcoraci.wordpress.com/2017/02/14/android-drawer-and-fragment-navigation-a-more-real-life-scenario/